Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 195, NWS Twin Cities, MN

September 21, 2024Chippewa County, Rusk County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at Sep 21, 2024, 12:52 PM CDT for Chippewa County, Rusk County, Wisconsin. It was in force for 53 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Sep 21, 2024, 12:52 PM CDT (17:52 UTC)
Expired: Sep 21, 2024, 1:45 PM CDT
In force: 53 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

Counties Chippewa County, WI, Rusk County, WI

The radar

The La Crosse radar (KARX), 165 km from the middle of the area, began a volume at 17:54 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

Time	Report	Where	Remark
Sep 21, 1:10 PM CDT	HAIL 0.75	5 Ese Weyerhaeuser, WI	Hailed a few minutes. Most hail was smaller.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 5.9 hours before the alert went out and 194 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 5 J/kg
Mixed-layer CIN: -598 J/kg
Mixed-layer LCL: 2079 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 295 m²/s²
0-3 km storm-relative helicity: 361 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.3

Open this sounding in Storm Lab

The text

As transmitted.

190 
WUUS53 KMPX 211752
SVRMPX
WIC017-107-211845-
/O.NEW.KMPX.SV.W.0195.240921T1752Z-240921T1845Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
1252 PM CDT Sat Sep 21 2024

The National Weather Service in the Twin Cities has issued a

* Severe Thunderstorm Warning for...
  Southwestern Rusk County in northwestern Wisconsin...
  Northeastern Chippewa County in west central Wisconsin...

* Until 145 PM CDT.

* At 1252 PM CDT, a severe thunderstorm was located 6 miles south of
  Weyerhaeuser, or 18 miles southeast of Rice Lake, moving east at 30
  mph.

  HAZARD...Quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Damage to vehicles is expected.

* This severe thunderstorm will be near...
  Sheldon around 130 PM CDT.

Other locations impacted by this severe thunderstorm include Island
Lake and Conrath.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4528 9149 4542 9150 4544 9092 4522 9093
      4521 9094
TIME...MOT...LOC 1752Z 272DEG 27KT 4533 9144 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...<50 MPH

$$

MPG

3 follow-up statements

260 
WWUS53 KMPX 211809
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
109 PM CDT Sat Sep 21 2024

WIC017-107-211845-
/O.CON.KMPX.SV.W.0195.000000T0000Z-240921T1845Z/
Rusk WI-Chippewa WI-
109 PM CDT Sat Sep 21 2024

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 145 PM CDT
FOR SOUTHWESTERN RUSK AND NORTHEASTERN CHIPPEWA COUNTIES...

At 109 PM CDT, a severe thunderstorm was located 7 miles south of
Bruce, or 11 miles southwest of Ladysmith, moving east at 30 mph.

HAZARD...Quarter size hail.

SOURCE...Radar indicated.

IMPACT...Damage to vehicles is expected.

This severe storm will be near...
  Sheldon around 130 PM CDT.

Other locations impacted by this severe thunderstorm include Conrath.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4528 9136 4542 9136 4544 9092 4522 9093
      4521 9094
TIME...MOT...LOC 1809Z 269DEG 26KT 4534 9127 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...<50 MPH

$$

MPG

719 
WWUS53 KMPX 211828
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
128 PM CDT Sat Sep 21 2024

WIC017-211837-
/O.CAN.KMPX.SV.W.0195.000000T0000Z-240921T1845Z/
Chippewa WI-
128 PM CDT Sat Sep 21 2024

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CHIPPEWA COUNTY
IS CANCELLED...

The severe thunderstorm which prompted the warning will remain in 
southern Rusk county. Therefore, the warning has been cancelled for 
northern Chippewa county.

&&

LAT...LON 4529 9119 4543 9116 4544 9099 4544 9092
      4529 9093
TIME...MOT...LOC 1827Z 272DEG 27KT 4533 9107 

$$

WIC107-211845-
/O.CON.KMPX.SV.W.0195.000000T0000Z-240921T1845Z/
Rusk WI-
128 PM CDT Sat Sep 21 2024

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 145 PM CDT
FOR SOUTH CENTRAL RUSK COUNTY...

At 127 PM CDT, a severe thunderstorm was located near Sheldon, or 9
miles south of Ladysmith, moving east at 30 mph.

HAZARD...Quarter size hail.

SOURCE...Radar indicated.

IMPACT...Damage to vehicles is expected.

This severe storm will be near...
  Sheldon around 135 PM CDT.

Other locations impacted by this severe thunderstorm include Conrath.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4529 9119 4543 9116 4544 9099 4544 9092
      4529 9093
TIME...MOT...LOC 1827Z 272DEG 27KT 4533 9107 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...<50 MPH

$$

MPG

438 
WWUS53 KMPX 211837
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
137 PM CDT Sat Sep 21 2024

WIC107-211846-
/O.EXP.KMPX.SV.W.0195.000000T0000Z-240921T1845Z/
Rusk WI-
137 PM CDT Sat Sep 21 2024

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL RUSK COUNTY WILL
EXPIRE AT 145 PM CDT...

The storm which prompted the warning has weakened. Therefore, the 
warning will be allowed to expire.

&&

LAT...LON 4529 9119 4543 9116 4544 9099 4544 9092
      4529 9093
TIME...MOT...LOC 1836Z 272DEG 27KT 4533 9098 

$$

MPG

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Twin Cities, MN wrote its last area forecast discussion before this severe thunderstorm warning went out at Sep 21, 6:04 AM CDT, 6 hours 48 minutes earlier. Its key messages:

Isolated to scattered showers and storms in central Minnesota this morning shifting to southern Minnesota into western Wisconsin later today.
A fall temperature roller coaster with another warm day today before temperatures fall substantially Sunday and warming back up through the rest of the week.

Area forecast discussion, Sep 21, 6:04 AM CDT, 6 hours 48 minutes before

Area Forecast Discussion
National Weather Service Twin Cities/Chanhassen MN
604 AM CDT Sat Sep 21 2024

.KEY MESSAGES...

- Isolated to scattered showers and storms in central Minnesota
  this morning shifting to southern Minnesota into western
  Wisconsin later today.

- A fall temperature roller coaster with another warm day today
  before temperatures fall substantially Sunday and warming back
  up through the rest of the week.

&&

.DISCUSSION...
Issued at 240 AM CDT Sat Sep 21 2024

This weekend...Scattered showers with some isolated
thunderstorms will continue this morning driven by a LLJ in the
warm sector of the advancing system. Another round of showers
and thunderstorms is expected today along and ahead of the cold
front. With a cap in place there should be a time gap in
precipitation later this morning once the LLJ driven convection
comes to an end. As the surface heating continues ahead of the
front thermal profiles will eventually allow for the cap to
break. This will most likely be in the afternoon. By that time
the front should get far enough that the most likely areas for
rain and thunder will be in the southeastern quarter of
Minnesota and into western Wisconsin. The heating under the cap
should allow for some instability to form with up to around 1000
J/kg of SBCAPE forecast. Not a great shear setup so the chances
for severe storms are low. Any chance for a stronger storm
would likely be pulse convection and would not be a long lived
strong to severe threat if even occurs. Temperatures will be
much cooler behind this front with temperatures across
northwestern Minnesota (behind the front) 20 to 25 degrees
cooler than southeastern Minnesota (ahead of the front) for
today's forecast high temperatures. Behind this front Sunday
will be much cooler with high temperatures in the mid to upper
60s. Also with high pressure moving in, there should be
clearing skies during the day. Another system likely staying to
our south is unlikely to provide rain chances, but could keep
cloud cover longer across southern Minnesota into parts of
western Wisconsin.

Monday through Friday... The week ahead will be dominated by
surface high pressure with little chance for additional
rainfall. Also under mostly high pressure expect clear to mostly
clear skies. Winds at 850 mb trend back to a southerly or
westerly direction with more of a WAA regime in place. This will
help provide a warming trend through the week. Bringing
Monday's highs of near 70 up into the upper 70s by the end of
the week. Normal high temperatures this time of year are in the
upper 60s. So near normal the start of the week warming back
above normal for the remainder of the week. Despite annual
precipitation numbers still well above normal September has
been dry for many, with MSP Airport currently on track for one
of the driest Septembers on record.

&&

.AVIATION /12Z TAFS THROUGH 12Z SUNDAY/...
Issued at 604 AM CDT Sat Sep 21 2024

Overall VFR today with periods of showers and thunderstorms
possible. Isolated thunderstorms will continue this morning.
These will remain isolated and may not hit terminals, but it
could be close and the spots where it is most likely have a
PROB30. Another chance for showers and storms this afternoon.
This would be for eastern MN and western WI terminals. Some LLWS
will continue early this morning, but later this morning it
should wind down the LLWS. As the LLWS winds down winds will
pick up later this morning and remain gusty for much of the
period. Should overall be from the south or southeast before the
front comes through later today and shifts to the northwest.

KMSP...Isolated thunderstorms to the west could get near the
terminal between 14Z and 16Z this morning. Kept it as a PROB30
as uncertainty remains on if the storms will survive or
dissipate before reaching the terminal area. There is another
chance for rain this afternoon as well. Kept with SHRA for now,
but if we warm up enough today it might need to be changed to
TSRA.

/OUTLOOK FOR KMSP/
SUN PM...VFR. Wind N 5-10 kts.
MON...VFR. Wind E 5-10 kts.
TUE...VFR. Wind S 5-10 kts.

&&

.MPX WATCHES/WARNINGS/ADVISORIES...
MN...None.
WI...None.

&&

DISCUSSION...NDC
AVIATION...NDC

Hazardous weather outlook, Sep 21, 3:10 AM CDT, 9 hours 42 minutes before

Hazardous Weather Outlook
National Weather Service Twin Cities/Chanhassen MN
310 AM CDT Sat Sep 21 2024

MNZ041>045-047>070-073>078-082>085-091>093-WIZ014>016-023>028-
220815-
Douglas-Todd-Morrison-Mille Lacs-Kanabec-Stevens-Pope-Stearns-
Benton-Sherburne-Isanti-Chisago-Lac Qui Parle-Swift-Chippewa-
Kandiyohi-Meeker-Wright-Hennepin-Anoka-Ramsey-Washington-
Yellow Medicine-Renville-McLeod-Sibley-Carver-Scott-Dakota-
Redwood-Brown-Nicollet-Le Sueur-Rice-Goodhue-Watonwan-Blue Earth-
Waseca-Steele-Martin-Faribault-Freeborn-Polk-Barron-Rusk-
St. Croix-Pierce-Dunn-Pepin-Eau Claire-
310 AM CDT Sat Sep 21 2024

This Hazardous Weather Outlook is for portions of central and
southern Minnesota, and west central Wisconsin.

.DAY ONE...Today and Tonight.

Isolated to scattered showers with some isolated thunderstorms.
The chance for strong to severe storms is low.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

SKYWARN spotter activation will not be needed.

In the hours before

Special weather statement, Sep 21, 9:40 AM CDT, 3 hours 12 minutes before

Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
940 AM CDT Sat Sep 21 2024

MNZ058-065-066-211515-
McLeod MN-Renville MN-Meeker MN-
940 AM CDT Sat Sep 21 2024

...A STRONG THUNDERSTORM WILL IMPACT SOUTHERN MEEKER...NORTHWESTERN
MCLEOD AND NORTHEASTERN RENVILLE COUNTIES THROUGH 1015 AM CDT...

At 940 AM CDT, Doppler radar was tracking a strong thunderstorm near
Cosmos, or 17 miles west of Hutchinson, moving northeast at 50 mph.

HAZARD...Wind gusts up to 40 mph and nickel size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible.

This strong thunderstorm will be near...
  Cosmos around 945 AM CDT.
  Dassel around 1005 AM CDT.

Other locations impacted by this storm include Corvuso, Greenleaf,
Darwin, Cedar Mills, and Strout.

This includes U.S. Highway 12 between mile markers 104 and 114.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4518 9425 4495 9427 4481 9474 4489 9480
      4489 9476 4497 9476 4522 9428
TIME...MOT...LOC 1440Z 240DEG 42KT 4489 9473

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...40 MPH

MPG

Special weather statement, Sep 21, 9:49 AM CDT, 3 hours 3 minutes before

Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
949 AM CDT Sat Sep 21 2024

MNZ062-063-211515-
Washington MN-Ramsey MN-
949 AM CDT Sat Sep 21 2024

...A STRONG THUNDERSTORM WILL IMPACT NORTHERN WASHINGTON AND RAMSEY
COUNTIES THROUGH 1015 AM CDT...

At 948 AM CDT, Doppler radar was tracking a strong thunderstorm over
Roseville, or near St. Paul, moving east at 40 mph.

HAZARD...Wind gusts up to 40 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible.

This strong thunderstorm will be near...
  St. Paul, Maplewood, Oakdale, White Bear Lake, and Vadnais Heights
  around 955 AM CDT.
  Stillwater around 1000 AM CDT.
  Bayport around 1005 AM CDT.

Other locations impacted by this storm include Lake Phalen, Grant,
Lauderdale, Willernie, Lakeland Shores, St Paul Battlecreek Regional
Park, North St. Paul, North Oaks, Gem Lake, and Oak Park Heights.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 4519 9279 4509 9277 4506 9280 4503 9276
      4497 9277 4494 9275 4493 9276 4492 9319
      4510 9323 4513 9310 4512 9303 4514 9302
TIME...MOT...LOC 1448Z 260DEG 37KT 4503 9311

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH

MPG

Special weather statement, Sep 21, 10:59 AM CDT, 1 hour 53 minutes before

Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1059 AM CDT Sat Sep 21 2024

WIZ025>028-211645-
Chippewa WI-Dunn WI-Eau Claire WI-Pepin WI-
1059 AM CDT Sat Sep 21 2024

...STRONG THUNDERSTORMS WILL IMPACT NORTHEASTERN PEPIN...SOUTHEASTERN
DUNN...SOUTHERN CHIPPEWA AND EAU CLAIRE COUNTIES THROUGH 1145 AM
CDT...

At 1058 AM CDT, a cluster of strong thunderstorms along a line
extending from near Elk Mound to 9 miles southwest of Eau Claire to
near Durand is producing wind gusts of 40 to 50 mph. Movement was
east at 35 mph.

HAZARD...Wind gusts up to 50 mph.

SOURCE...Public.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Eau Claire, Chippewa Falls, Altoona, Lake Hallie, Lake Wissota,
Durand, Cadott, Fall Creek, Elk Mound, Ludington, Rock Falls, and
Caryville.

This includes the following highways...
 Interstate 94 in Wisconsin between mile markers 55 and 80.
 U.S. Highway 53 between mile markers 86 and 98.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with these storms and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 4478 9109 4459 9141 4460 9201 4475 9175
      4494 9164 4494 9096
TIME...MOT...LOC 1558Z 266DEG 32KT 4488 9160 4476 9167 4461 9192

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH

MPG

Local storm report, Sep 21, 11:14 AM CDT, 1 hour 38 minutes before

Preliminary Local Storm Report
National Weather Service Twin Cities/Chanhassen MN
1114 AM CDT Sat Sep 21 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1045 AM     Tstm Wnd Gst     4 NNE Eau Claire        44.86N 91.48W
09/21/2024  M52 MPH          Chippewa           WI   ASOS

&&

mpg

Local storm report, Sep 21, 11:43 AM CDT, 1 hour 9 minutes before

Preliminary Local Storm Report
National Weather Service Twin Cities/Chanhassen MN
1143 AM CDT Sat Sep 21 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0804 AM     Tstm Wnd Dmg     4 SSE Bradford          45.47N 93.34W
09/21/2024                   Isanti             MN   Public

            Photo of a 10 inch diameter pine branch
            snapped.

&&

CTG

Special weather statement, Sep 21, 12:44 PM CDT, 8 minutes before

Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1244 PM CDT Sat Sep 21 2024

WIZ015-016-027-211830-
Chippewa WI-Barron WI-Rusk WI-
1244 PM CDT Sat Sep 21 2024

...A STRONG THUNDERSTORM WILL IMPACT SOUTHWESTERN RUSK...NORTHWESTERN
CHIPPEWA AND SOUTHEASTERN BARRON COUNTIES THROUGH 130 PM CDT...

At 1244 PM CDT, Doppler radar was tracking a strong thunderstorm 6
miles east of Chetek, or 15 miles southeast of Rice Lake, moving east
at 30 mph.

HAZARD...Half inch hail.

SOURCE...Radar indicated.

IMPACT...Minor hail damage to vegetation is possible.

This storm will remain over mainly rural areas of southwestern Rusk,
northwestern Chippewa and southeastern Barron Counties, including the
following locations... Island Lake, Holcombe, and Chippewa Moraine
State Rec Area.

This includes U.S. Highway 53 between mile markers 122 and 124.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4524 9163 4542 9163 4545 9110 4518 9111
TIME...MOT...LOC 1744Z 271DEG 24KT 4533 9153

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...<30 MPH

MPG

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 21, 8:41 AM CDT	Special Weather Statement	MPX	Polk	49 min
Sep 21, 10:59 AM CDT	Special Weather Statement	MPX	Eau Claire, Pepin	46 min
Sep 21, 12:44 PM CDT	Special Weather Statement	MPX	Rusk	46 min
Sep 21, 3:02 PM CDT	Special Weather Statement	MPX	Rusk	43 min
Sep 21, 3:06 PM CDT	Severe Thunderstorm Warning	MPX	Rusk	39 min
Sep 21, 4:16 PM CDT	Special Weather Statement	MPX	Rusk	44 min
Sep 21, 4:58 PM CDT	Special Weather Statement	MPX	Eau Claire	32 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2024 Every severe thunderstorm warning in 2024

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.